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mkfs.cramfs — Create a ROM filesystem inside a partition. More information: <https://manned.org/mkfs.cramfs>.

Submitted by: @import:tldr-pages·Mar 2, 2026·

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createcommandmkfs.cramfspartitionclifilesysteminsiderom

linux

Problem

How to use the mkfs.cramfs command: Create a ROM filesystem inside a partition. More information: <https://manned.org/mkfs.cramfs>.

Solution

mkfs.cramfs — Create a ROM filesystem inside a partition. More information: <https://manned.org/mkfs.cramfs>.

Create a ROM filesystem out of a directory inside partition Y on device X:

sudo mkfs.cramfs {{path/to/directory}} {{/dev/sdXY}}

Create a ROM filesystem with a volume-name:

sudo mkfs.cramfs -n {{volume_name}} {{path/to/directory}} {{/dev/sdXY}}

Code Snippets

Create a ROM filesystem out of a directory inside partition Y on device X

sudo mkfs.cramfs {{path/to/directory}} {{/dev/sdXY}}

Create a ROM filesystem with a volume-name

sudo mkfs.cramfs -n {{volume_name}} {{path/to/directory}} {{/dev/sdXY}}

Context

tldr-pages: linux/mkfs.cramfs

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